Tension control device of a triple twist pay-off system

ABSTRACT

The present invention relates to a tension control device of a twist pay-off system, especially a triple twist system, which uses mechanical control devices to keep the wires and strands in constant tension to produce qualified cables. The twist pay-off system mainly includes a constant control device and a tension reducer device, both of which have an active arm, a weight and several wheels for guiding the wires and the cables. By use of the weight under attraction of gravity, the devices can control the transport speed and keep them in a related constant tension all the time.

FIELD OF THE INVENTION

The present invention relates to a tension control device of a triple twist pay-off system, which provides a mechanical device to keep entry wires and output cable a constant tension to produce cable with satisfactory quality.

BACKGROUND OF THE INVENTION

It is known that the twist system is to assemble two or more wires into a strand or a cable for providing a better strength to bear heavy weight. In twisting procedures, each wire must be kept a constant tension before entering twist system. And the tension of the output cable must be reduced and kept constant to be rolled around a roller as a final product for storage or use. In order to maintain the constant tension, most known devices are provided an electronic detector to measure the tension of wires at a certain point and send the data to a processor and a motor to control the transport speed and the tension. It is not reliable that the electronic control has a time delay that occurs inaccuracy usually.

SUMMARY OF THE INVENTION

The present invention is to provide a tension control device of a twist pay-off system, especially a triple twist system, which uses mechanical control devices to keep the wires and strands in constant tension to produce qualified cables. Now, accompanying with the following drawings, the character of the present invention will be described here and after.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a triple twist pay-off system according to the present invention.

FIG. 2 shows a constant tension control device according to the present invention.

FIG. 3 shows a tension reducer device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIG. 1, the present invention relates to an improved twist system, especially a triple twist pay-off system, which includes a raw supplier (1), a constant tension control device (2), a twist station (3), a tension reducer device, and a final product roller (5). It is to be found that the characters of the present invention are the connection of the constant control device (2) and the tension reducer device (4). The constant tension control device (2), as shown in FIG. 2, includes a frame (21) and several guide wheels (22). An active arm (23) has one end pivot to the frame (21) and the other end connect another wheel (24) and a weight (25). The tension reducer device (4), as shown in FIG. 3, includes a frame (41) and several wheels (42). An active arm (43) has one end pivot to the frame (41) and the other end connect another wheel (44) and a weight (45).

Wires (11) provided from the raw supplier (1) enter into the constant tension control device (2) that pass through the wheels (22) and (24) and then enter into the twist station to be twisted a strand or a cable (31). The cable (31) then enters into the tension reducer device (4) that passes through the wheels (42) and (44) and moves to a shaft (51) of the product roller (5). As the wires (11) pass the constant tension control device (2), the weight (25) under the attraction of gravity can keep the wires in a constant tension always. If the transport speed of the wires changes, the weight (25) will be swung followed by the active arm (23) to control the speed and maintain constant tension automatically. By the same theory, the active arm (43) and the weight (45) of the tension reducer device (4) can control the cable (3) in a constant tension and a reduced transport speed.

Accordingly, it is to be understood that the present invention uses the weight controlled by gravity to keep the wires and the cable in a constant tension. That is the mechanical control of the present invention will be stable and reliable without mistake. Hence, it obtains utility and improvement and should be allowed for a patent. The above-mentioned structures are only embodiments to illustrate my designs and are not to limit the scope of this application. Any modified embodiment with similar merits will be still claimed by the present invention. 

1. A tension control device of a triple twist pay-off system including a raw supplier, a constant tension control device, a twist station, a tension reducer device, and a final product roller, and the characters are the constant tension control device includes a frame and several guide wheels, an active arm having one end pivot to the frame and the other end connect another wheel and a weight, and the tension reducer device includes a frame and several wheels, an active arm having one end pivot to the frame and the other end connect another wheel and a weight; wires provided from the raw supplier entering into the constant tension control device that pass through the wheels and then enter into the twist station to be twisted a strand or a cable, which then enters into the tension reducer device that passes through the wheels, and moves to a shaft of the product roller.
 2. The tension control device of a triple twist pay-off system as claimed in claim 1, wherein both active arms of the constant tension control device and tension reducer device can be swung to keep the wires and the cables in a related constant tension. 